Re: 97 Cher Sport Check Eng Light Code 12
 

Spoke too soon. The CEL is back on with a Code 45 now attached. Can't even
find a ref for that. Going to go get the OBDi checked for the real codes.

"Rich D" <brainiax@hvc.rr.com> wrote in message
news:bz8Yg.3377$Ct3.3301@news-wrt-01.rdc-nyc.rr.com...
> 97 Cherokee Sport 170K auto 4wd
>
> Keep getting a CEL code 12 (battery disconnected) error. Then it will go
> away for a day, but it keeps coming back. 12 55.
>
> Also, some times the auto trans will not shift into 4th gear. Presuming
> the throttle position sensor here, but why no error on that? That symptom
> goes away after restarting.
>
> Only other flaky thing is the neutral safety switch. Always starts in
> neutral, but not alw3ays in Park.
>
> ANy ideas?
>

Re: 97 Cher Sport Check Eng Light Code 12
 

You (the group) might be on to something. The negative pole was fine -
clean and dry, but the poisitve pole, while looking clean, when I took it
off was moist. Probably wicked up from one of those anti-corrosive pads
insatlled with the battery 2 years ago.

So far (12 hours) the CEL is off.

"DougW" <post.replies@invalid.address> wrote in message
news:ZObYg.35077$iA5.14705@dukeread11...
> Rich D wrote:
>> 97 Cherokee Sport 170K auto 4wd
>>
>> Keep getting a CEL code 12 (battery disconnected) error. Then it
>> will go away for a day, but it keeps coming back. 12 55.
>>
>> Also, some times the auto trans will not shift into 4th gear. Presuming
>> the throttle position sensor here, but why no error on
>> that? That symptom goes away after restarting.
>
> Something is confusing the computer and putting things in limp mode.
>
>> Only other flaky thing is the neutral safety switch. Always starts in
>> neutral, but not alw3ays in Park.
>
> The NSS is high on the transmission and a real bugger to get at.
> It might need replacement or the harness might have been damaged
> somehow.
>
>> ANy ideas?
>
> Always. ^_^
>
> Check your battery terminals and cables, they may be loose
> or corroded. I've even seen loose battery terminals.
>
> check the engine ground strap and examine all the wire looms
> and runs for any snags or melts.
>
> Assuming you have the I6, check the O2 sensor wire where
> it runs along the oil pan and is held to the block with a
> clamp. If the shield has melted it can short out and cause
> all sorts of problems.
>
> --
> DougW
>

Re: 97 Cher Sport Check Eng Light Code 12
 

Spoke too soon. The CEL is back on with a Code 45 now attached. Can't even
find a ref for that. Going to go get the OBDi checked for the real codes.

"Rich D" <brainiax@hvc.rr.com> wrote in message
news:bz8Yg.3377$Ct3.3301@news-wrt-01.rdc-nyc.rr.com...
> 97 Cherokee Sport 170K auto 4wd
>
> Keep getting a CEL code 12 (battery disconnected) error. Then it will go
> away for a day, but it keeps coming back. 12 55.
>
> Also, some times the auto trans will not shift into 4th gear. Presuming
> the throttle position sensor here, but why no error on that? That symptom
> goes away after restarting.
>
> Only other flaky thing is the neutral safety switch. Always starts in
> neutral, but not alw3ays in Park.
>
> ANy ideas?
>